At least 9 injured in Philadelphia shooting after multiple people started firing at a crowd

At least nine people were injured in Philadelphia, four critically, after multiple shooters started firing at a crowd Saturday night, police said.

The shooting in Philadelphia's Kensington neighborhood happened around 10:45 p.m., when multiple people got out of a vehicle and opened fire at a group of people.

The shooting happened outside a bar in the northern Philadelphia neighborhood, NBC Philadelphia reported.

The shooters, who police say may number three or four, fled in the same car. There were at least 40 pieces of ballistic evidence on the scene, NBC Philadelphia reported.

No weapons were recovered and no arrests were made, police said.

The nine victims, all adults 23 to 40 years old, were taken to a hospital, police said.

A motive was not known Sunday. Police said it seems the shooters saw someone they were after and started firing, NBC Philadelphia reported.

Deputy Police Commissioner John Stanford said at a briefing Saturday that there is a heavy police force in the area.

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“We have some brazen individuals who don’t care how many police are here or how many people are here," he said.

Mayor Jim Kenney tweeted: “I’m appalled and devastated by this despicable, brazen act of gun violence. My heart is with the family and loved ones of those injured, and with everyone impacted by this tragedy."

Police continue to investigate and asking anyone with information to come forward.

This article was originally published on NBCNews.com